Refine RSVP form and confirmation modal presentation

style.css

@@ -859,7 +859,7 @@ body.modal-open {
 .success-modal__backdrop {
   position: absolute;
   inset: 0;
-  background: rgba(7, 14, 24, 0.52);
+  background: rgba(7, 14, 24, 0.64);
   backdrop-filter: blur(5px);
   -webkit-backdrop-filter: blur(5px);
 }
@@ -867,12 +867,11 @@ body.modal-open {
 .success-modal__dialog {
   position: relative;
   z-index: 1;
-  width: min(100%, 620px);
+  width: min(100%, 640px);
 }
 
 .success-tag {
-  display: grid;
-  grid-template-columns: 14px 1fr;
+  display: block;
   background: rgba(255, 255, 255, 0.95);
   border: 1px solid rgba(255, 255, 255, 0.9);
   border-radius: 30px;
@@ -881,11 +880,12 @@ body.modal-open {
 }
 
 .success-tag__line {
-  background: linear-gradient(180deg, rgba(30,87,138,0.92), rgba(30,87,138,0.36));
+  display: none;
 }
 
 .success-tag__content {
-  padding: 1.7rem 1.5rem 1.5rem 1.35rem;
+  padding: 2rem 2rem 1.7rem;
+  text-align: center;
 }
 
 .success-tag__kicker {
@@ -898,31 +898,33 @@ body.modal-open {
 }
 
 .success-tag__title {
-  margin: 0;
-  font-size: clamp(1.7rem, 4vw, 2.4rem);
-  line-height: 1;
+  margin: 0 auto;
+  max-width: 18ch;
+  font-size: clamp(1.85rem, 4.1vw, 2.45rem);
+  line-height: 1.14;
   letter-spacing: -0.03em;
+  text-wrap: balance;
 }
 
 .success-tag__text {
-  margin: 0.8rem 0 1.25rem;
+  margin: 0.85rem auto 1.35rem;
+  max-width: 40ch;
   color: var(--ink-soft);
-  line-height: 1.7;
+  line-height: 1.72;
 }
 
 .success-tag__button {
   width: auto;
-  min-width: 132px;
+  min-width: 148px;
 }
 
 @media (max-width: 640px) {
   .success-tag {
-    grid-template-columns: 10px 1fr;
     border-radius: 24px;
   }
 
   .success-tag__content {
-    padding: 1.3rem 1.1rem 1.15rem 1rem;
+    padding: 1.35rem 1.2rem 1.2rem;
   }
 
   .success-tag__button {